Steffen; John J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Steffen; John J..The latest application filed is for "method for replacing a damaged railroad freight car brake beam".
- Steffen; John J. - Lindenhurst IL
- Steffen; John J. - Aurora IL
- Steffen; John J. - Darien IL
| Patent | Date |
|---|---|
| Method for replacing a damaged railroad freight car brake beam Grant 7,430,794 - Steffen, legal representative , et al. October 7 | 2008-10-07 |
| Method for replacing a damaged railroad freight car brake beam App 20060108187 - Steffen; John J. ; et al. | 2006-05-25 |
| Railcar draft gear assembly and system Grant 6,681,943 - Barker , et al. January 27, 2 | 2004-01-27 |
| Railcar draft gear assembly and system Grant 6,446,820 - Barker , et al. September 10, 2 | 2002-09-10 |
| Railcar draft gear assembly and system App 20020070189 - Barker, Ronald E. ; et al. | 2002-06-13 |
| Slackless railway coupler with buff/draft gear Grant 6,360,906 - Kaufhold , et al. March 26, 2 | 2002-03-26 |
| Ring seat removal system for a railcar articulate connector Grant 5,809,898 - Kaufhold , et al. September 22, 1 | 1998-09-22 |
| Draft sill and wheel truck connection Grant 5,809,899 - Kaufhold , et al. September 22, 1 | 1998-09-22 |
| Slackless railway coupler with draft/buff gear Grant 5,312,007 - Kaufhold , et al. May 17, 1 | 1994-05-17 |
| Slackless railcar connections with upward wear indicator Grant 5,080,242 - Steffen , et al. January 14, 1 | 1992-01-14 |
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